Luminaire for generating direct lighting and indirect lighting

Abstract

A luminaire comprises a first light exit opening for emitting light from at least two light sources. A diffusely-reflecting first reflector portion is arranged on an inner side of a luminaire body. A first light source is arranged in an edge portion of the luminaire body surrounding the first light exit opening. First light beams of the first light source are deflected towards the first reflector portion by a second reflector portion, so that said beams exit through the first light exit opening as a diffusely-reflected first light beam bundle. A second light source generates a second light beam bundle. The first light beams exit the luminaire body exclusively as first light beams reflected at the first reflector portion. A second light exit opening is surrounded by the first reflector portion. A second aperture angle of the second light beam bundle is smaller than the first aperture angle.

Claims

1-15. (canceled)

16. A luminaire (1), comprising a half-shell-shaped luminaire body (3), wherein the luminaire body (3) comprises a first light exit opening (4) for emitting light from at least two light sources (6, 8) of the luminaire (1), wherein the luminaire body (3) comprises, on an inner side (9), a diffusely-reflecting first reflector portion (10), wherein a first light source (6) is arranged within the luminaire body (3) in an edge portion (11) of the luminaire body (3) surrounding the first light exit opening (4), wherein first light beams (5) of the first light source (6) are deflected at least partially in the direction of the first reflector portion (10) by a second reflector portion (12) arranged within the luminaire body (3) and exit from the luminaire body (3) through the first light exit opening (4) as a first light beam bundle (13) diffusely-reflected at the first reflector portion (10), wherein a second light source (8) is arranged at least in sections within the luminaire body (3), wherein a second light beam bundle (7) directed in the direction of the first light exit opening (4) can be generated by the second light source (8), wherein the luminaire body (3) comprises, in the edge portion (11), a light-impermeable cover part surrounding the first light exit opening (4), wherein the second reflector portion (12) is arranged at least in sections on the cover part, wherein the cover part is configured in such a way that the first light beams (5) exit from the luminaire body (3) through the first light exit opening (4) exclusively as a first light beam bundle (13) reflected at the first reflector portion (10), and wherein the luminaire body (3) comprises a second light exit opening (14) which is surrounded at least in sections by the first reflector portion (10).

17. The luminaire (1) according to claim 16, wherein the second light beam bundle (7) is completely enclosed by the first light beam bundle (13) outside the luminaire body (3).

18. The luminaire (1) according to claim 16, wherein the second light beam bundle (7) generated by the second light source (8) is shaded at a circumferential edge of the second light exit opening (14).

19. The luminaire (1) according to claim 16, wherein the second light source (8) is arranged offset back behind the second light exit opening (14) opposite to a beam propagation direction of the second light beam bundle (7).

20. The luminaire (1) according to claim 16, wherein a diameter of the second light exit opening (14) is at most one fifth of a diameter of the first light exit opening (4).

21. The luminaire (1) according to claim 16, wherein the second light source (8) comprises a beam-shaping element (15) with which a second aperture angle (16) of the second light beam bundle (7) can be preset.

22. The luminaire (1) according to claim 21, wherein by the beam-shaping element (15), the second aperture angle (16) of the second light beam bundle (7) passing through the first light exit opening (4) and through the second light exit opening (14) can be set smaller than a first aperture angle (17) of the first light beam bundle (13) passing through the first light exit opening (4).

23. The luminaire (1) according to claim 16, wherein the cover part and the second reflector portion (12) are arranged at least in sections between the first light source (6) and the first light exit opening (4).

24. The luminaire (1) according to claim 16, wherein the second reflector portion (12) is arranged on a side of the cover part facing away from the first light exit opening (4) and facing the inner side (9) of the luminaire body (3).

25. The luminaire (1) according to claim 16, wherein the second reflector portion (12) completely surrounds the first light exit opening (4).

26. The luminaire (1) according to claim 16, wherein the luminaire body (3) is formed as a hemisphere.

27. The luminaire (1) according to claim 16, wherein the cover part is L-shaped, wherein a first leg of the L-shaped cover part adjoins an edge of the luminaire body (3) and extends in the direction of the first light exit opening (4), and wherein a second leg of the L-shaped cover part extends in the direction of the inner side (9) of the luminaire body (3).

28. The luminaire (1) according to claim 16, wherein the first light source (6) is configured in the form of a strip.

29. The luminaire (1) according to claim 16, wherein a light intensity of the first light beam bundle (13) and a light intensity of the second light beam bundle (7) are adjustable independently of one another.

30. The luminaire (1) according to claim 16, wherein a color temperature of the first light beam bundle (13) and a color temperature of the second light beam bundle (7) are adjustable independently of one another.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG. 1 is a schematic illustration of a luminaire in a sectional view, and

[0028] FIG. 2 is a schematic illustration of an illumination situation created by the luminaire.

DETAILED DESCRIPTION

[0029] In FIG. 1, a luminaire 1 is schematically shown in a sectional view as a luminaire 1 installed in a ceiling 2. The luminaire 1 serves to illuminate a work surface not shown in FIG. 1 by means of direct and indirect lighting components. The luminaire 1 comprises a half-shell-shaped luminaire body 3 with a first light exit opening 4, wherein a first light beam bundle 13, consisting of first light beams 5, of a first light source 6 and a second light beam bundle 7 of a second light source 8 pass through the first light exit opening 4. The luminaire body 3 comprises a first reflector portion 10 scatteringly reflecting on an inner side 9. The first light source 6 is configured as an LED strip and is arranged inside the luminaire body 3 in an edge portion 11 of the luminaire body 3. The luminaire body 3 also comprises a light-impermeable cover part 12 surrounding the first light exit opening 4. The cover part has an L-shaped configuration. A second reflector portion 12 is arranged between the first light source 6 and the first light exit opening 4. The first light beams 5 of the first light source 6 are at least partially deflected by the second reflector portion 12 in the direction of the first reflector portion 4. The deflected first light beams 5 are reflected at the first reflector portion 4 and exit the luminaire body 3 through the first light exit opening 4 as a first light beam bundle 13. A second light exit opening 14 of the second light source 8 is surrounded by the first reflector portion 10 at least in sections. The second light source 8 is arranged offset back behind the second light exit opening 14 opposite to a beam propagation direction of the second light beam bundle 7. The second light source 8 comprises a beam-shaping element 15 configured as a lens, with which the second light beam bundle 7 is focused. As a result, a second aperture angle 16 of the second light beam bundle 7 passing through the first light exit opening 4 and the second light exit opening 14 can be set smaller than a first aperture angle 17 of the first light beam bundle 5 passing through the first light exit opening 4.

[0030] In FIG. 2, an illumination situation created by the luminaire 1 is shown schematically. The luminaire 1 is arranged in the ceiling 2 of the room above a desk 18. The second light beam bundle 7 exiting the luminaire body 3 at the second aperture angle 16 produces direct illumination of a surface of the desk 18. The first light beam bundle 5 exiting the luminaire body 3 at the first aperture angle 17 is used for indirect illumination of the room and the desk 18.